Nashorn error loading javascript - version issue?

Question

In trying to load the env-js library into nashorn, I'm finding that it chokes on parsing this syntax:

function () { ...
   get x(){ ... },
   get y() { ... },
   ...
}

which seems to be parsed fine in rhino. I can't find any references to the version of javascript currently supported by nashorn. Is this due to nashorn not supporting this syntax?

It is EMCAScript 5.1. See openjdk.java.net/jeps/174. How are you loading env-js? Are you loading the rhino script? — pd40
– pd40, Commented Jun 4, 2014 at 11:26

user2426985 · Accepted Answer · 2014-09-05 20:49:04Z

1

Hannes Wallnoefer did a port of env.js for Nashorn. It's included as an attachment to a feature request for Nashorn. I haven't tried it, but it is relatively recent work and presumably still works.

https://bugs.openjdk.java.net/browse/JDK-8006183

answered Sep 5, 2014 at 20:49

user2426985

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3 Comments

Steve B. Over a year ago

Thanks. I will definitely take a look at this.

Steve B. Over a year ago

This turns out not to work for an unrelated reason - we're doing DOM parsing, envjs relied on e4x. The port referenced above also relies on that, unfortunately e4x doesn't exist in nashorn so DOM parsing fails. (bugs.openjdk.java.net/browse/JDK-8006183). But thanks for the suggestion.

user2426985 Over a year ago

Oh okay. That's too bad. My first thought was that "can't you just find an e4x js lib and include that", but obviously you would have looked into that and it's either not possible or not desirable for some reason. Best of luck. Post a solution if you find one. It's likely I will need to do this one day.

A. Sundararajan · Accepted Answer · 2014-06-28 16:29:44Z

0

get x() and set x() are to be used only within object literals (to define getter and setter for property "x"). I'm not sure if the above code snippet (where get x() and set x() are definied within a function definition) is accepted even by Rhino. Will you please point to the envjs code snippet that uses the above?

answered Jun 28, 2014 at 16:29

A. Sundararajan

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Comments

user3254105 · Accepted Answer · 2016-06-12 18:10:14Z

0

I did an initial port of env.js to Nashorn at https://github.com/blipper/env-js on the master branch. This version comments out the event loop because we were primarily using the XHR features. We are going to dust it off for internal reasons at work soon so there should be some more commits on it.

answered Jun 12, 2016 at 18:10

user3254105

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